wind velocity ratio 风速比值
Both the ratio of friction velocity to free stream wind velocity and the thickness of airflow are subject to the sidewall effect, showing the increase trend with the decreasing aspect ratios.
随着风洞宽高比的减小，断面内中垂线上的气流摩阻速度与自由流速的比值以及受风洞边壁影响的气流厚度均增大。
The wind environment around Chongqing Grand Theater is measured. According to the ratio of wind velocity k, the wind environment around the building is evaluated.
对重庆大剧院周围风环境进行了测量，并根据人群主要活动场所的风速比值，评价了该建筑周围的风环境。
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